Anti Rebound Protection Device And Circuit Breaker Comprising The Same

Abstract: The present disclosure relates to an anti-rebound protection device and a circuit breaker comprising the same. An operating mechanism of the circuit breaker comprises a housing, a main shaft arranged in the housing, and an output lever 4 connected to the main shaft. The anti-rebound protection device comprises: a control cam 1; a control lever 2 being rotatable relative to the housing, and provided with a first stopper for abutting against the control cam; and a locking mechanism comprising a locking member 3 rotatably connected to the output lever and a second stopper provided on the control lever. The locking mechanism is configured, during opening of the circuit breaker, such that the locking member is rotated relative to the output lever against the second stopper when the output lever is driven to rotate in a first direction, so as to allow the output lever to keep rotating in the first direction; and rotation of the output lever in a second direction opposite to the first direction is limited by interference between the locking member and the second stopper. The anti-rebound protection device can effectively limit the rebound of the moving contact by a mechanical means when opening the circuit breaker, and has a simple structure and low cost.

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